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Development and application of turbodrills in hot dry rock drilling 被引量:2
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作者 ZHANG De-long WENG Wei +4 位作者 ZHAO Chang-liang XU Jun-jun YANG Peng HUANG Yu-wen HU Zhen-zhong 《Journal of Groundwater Science and Engineering》 2018年第1期1-6,共6页
The strata of hot dry rock(HDR) are usually igneous rocks with high temperature which are challenging for drilling activities. This paper deals with the key technology and research of turbodrills, introduced the appli... The strata of hot dry rock(HDR) are usually igneous rocks with high temperature which are challenging for drilling activities. This paper deals with the key technology and research of turbodrills, introduced the application of turbodrills in HDR drilling at home and broad, and analyzed the field application cases. With the advancement such as low speed high torque turbodrill, reduction turbodrills, independent spindlesection and PDC bearings and so on, the application of turbodrills has widely expanded. The application of high-temperature turbodrills in Fenton Hill, HDR geothermal wells, high-temperature formation in Tahe oilfield all proved that turbodrills are the best downhole motors in deep high-temperature HDR drilling, thus they deserve further research and generalization. 展开更多
关键词 HOT DRY ROCK HDR DRILLING GEOTHERMAL DRILLING Turbodrill Field application
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